Relay.



-J. ERIGKsim.-

l. RELAY. rrLIoATIoN FILED AUG. zo, 1906.'-

Patented Aug'. 3, 1909.

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- UNITED 4sTATIJs PATENT OFFICE.

,JOHN ERICKSON, or CHICAGO, ILLINOIS, AssIGNoR, BY MEsNE AssIGNMEN'Ts, TOFIRST TRUST lAWD SAVINGS BANK, TRUSTEE, 0F CHICAGO, ILLINOIS.

RELAY.

To all whom it may concern.'

Be itknown that I, JOHN ERICKSON, a citi- .tele honeor signaling'systenis, and 'may be use in various kinds of apparatus requ'lring the provision of one or more relays forcentrollmg the circuits thereof.

Generally stated'the object 'of my invention is the provision of an improved and highly eiiicient relay. l

Special Aobj ects are to provide an im )roved mounting for the'armature ofthe sai relay;

4 vertical portion e which hangs in front of the' to provide an improved tubular relay havingl an L-shaped armature' removably mounted' upon one'end thereof; and to provide certain details and features of improvement "and combinations tending to increase the general this particular character. Tothe foregoing and other useful ends, Iny

invention consists in 'matters hereinafter 'set.

forth and claimed.

A lIn the accon- Ipanvv a plan of a relay embodyingtheprinciples of my invention.- Fig. 42 1s a side elevation of `the same. Fig. Sis aperspective of the are mature of said relay. Fig. 4 is'aperspeetive f of the device for l'retaining .the armature'in'- lace. Iig. -5'isfa'plan "of a relay characterlzed by another form of- Iny invention. v Fig. 6 Isa side elevation of the relay 'shownin Lig.

5. Fig. 7 isa perspective of the armature of the relay shown in Figs.. 5 and 6. Fig.- 8 is al perspective of the device vfor holding the ar-vv Inature ofFigs. 5 to'7in`place on the-end ofv the relay.

Referring to provedl relay comprises av tubular shell A for Inclosing t e electro-magnet.

side, so as to provide-a flat sup orting surface for the two grou s of switc springs B and C. These switc mounted and secured` in place by screws D,

andthe'forward ends of said sprinvs are ar ranged in position to beoperated hy the L- shaped armature E. This armaturehasa electro-magnet, and an-upper frarrlelilieporl` 'ng drawings, Figure 11 is This shell, however, is preferably attened on its upper springs are suitably' Specification of Letters Patent. `Application filed August 20, v1908. lSerial No. 331,303.

I ter, the-s `this device H is 'raten-ted auge, V190e.

tion e1 provided with insulating knobs e which engage and operate the said' switch springs, as shown more clearly ind l ig. 2. The upper edge of the portion e has a projec-- tion e3 which in effect provides a couple of notches' (See lfig. 3).

The sheet metal device F shown in Fig.- 4 is provided at its forward end with an upturned ipf, and is out away at its Center to prov1de an in closed tongue4 or flexible portion f1v having a screw openingf This formation also rovides a cou lefof flexible side 4portions f3.' A screw f 4 olds the said device in lace, With this arrangement the armature c a'n be ad'usted into place below.- theflexible or Inova le device F, the portion f5 being adapted to engage the notches e4. The'proection e3 engages the rear edge of the'ulip.- like forward end portion i',thus preventing dislodgment of the armature. 'At such time the straight upperedge a of thejshell A engages in the corner or angle o f the `L-shaped armature, thus practically providing a kmfeedge bearing upon which the armature can' swing-or tilt.

The' armature is h eldnor- Inallyaway from the electro-magnet by thed said switch springs', as shown more clearly in Fig. 2.'

In Figs, 5 to 8, inclusive, the constructlon of the electro-magnet and switch4 springs is substantially the saine as' thatdplready described. In this case, however, the y armature Gr has its vertical portion g provided -vvith an upper limite-edgev portion 'g." Fur thermof, .'with an armature ofv this characheet Inetal holding device H has a forward end whatbelow t ermai'n body portion'hl. Also,

The inner corner or Yangle of the v armature G:A rests upon the 'straight upper edge I -of the tubular Casin 1n a manner previouslydescribed. Wit thisarrangement'the armaortion hlo'eatedf ina plane somerovided with vflexible side ture Grv practically tilts or swings -upon a knife-edgebearin'g provided by the forward edge of the tubular casing, and in addition 4the knife-edge g1 engages 1n a corner or `angle onthe holding device This arrangeifo inent givesa good knife-edge bearing all Esprits-that is lto say, the armature has a "fefe'dge bearing wherever it engages sonne 'part of the stationary structure.'

" turned upside down-that is to say, can be `arranged in such a positionhat the'switch p yprings J Willbe underneath-'instead of above.

lthis position the weight of the armaturel will be sustained by the knife-edge g1 resting in the corners rof the holding device I-I. Inl either form ofrny invention it will be seen, hoWever,.that the L-shaped armatureA rests merely upon the straight forward edge of the tubular casing, and is removably held in place by a ii'xible sheet metal'holding .device'. With' t is arrangement the armay ture is easily inserted and readily removed.

What I ,claim .as my invention is 1% 1. In a relay, the'coinrinat'ion of an electro-magnet, a tubular she'll er casing therefor,

said casing provided With a vstraight upper edgeat one end thereof, switch springs disposed on said casing, an L-shaped armature having its, inner corner or angle engaged by said edge on the'casing, anda flexille sheet metal holding device ysecured to said casing and .removal'ly holding the armature `in place on the fulcrum provided hy said edge, the rearwardly projecting portion of said armature being adapted to engage and loperate' the forward ends of said switch springs.'

2.' In a relay, the corni ination of an electro-magnet, -a tubular shell er casing therefor, said casing provided with a flat side providfing' a straight edge at one end thereof, fsWitch springs suit'atlyrniounted on said iiat side, an L-shaped armature having its inner corner 'or angle engaged by said straight edge on the end of the casing, one portion of .said armature hanging in front of the end of Vthe electro-magnet, 'the other portion of the shell or casing,

larmature.extending back to engage andoperate the forward ends of said switchsprings', and a fleXil` le sheet metal device secured upon the flat side of said casing and engaging aninner portion of the armature tohold the same inplace. p

3. In a relay, an electro-magnet, a tubular casing therefor, said casing provided Withv a straight edge at one end thereof, an armature hung on said edge, a fiexible sheet metal holdingvdevice engaging the armature tore- Inoval'y hold the saine in place on the fulcruin provided by said edge, and switch con# tacts secured at the other end of the casing rand operated by saidv armature.

4.' Ina relay, an electro-magnet, a knifeed 'e'be'arlncr carried there!) an armature hung on said bearing, a sheet metal holding device secured to the magnet and engaging. the armature to removal-ly hold the sarne 1n place on the, fulcrum provided hy said edge,

and switch contacts secured at the other end v of the casing and operated by said armature.-

5. In a relay, an electromagnet, a tuliular casing therefor, said casing provided with a straight edge at one vend thereof, an armature hung on said edge, a iiexible sheet metal holding device engaging thearmature tojre- Ainovatrly hold the saine in place on the fulcrurn provided by said edge, and suitable means secured at the other end of the casing and operated by said armature.

6. In a relay, electroinagnet, a knife- Aedge bearing carried thereby, an armature hung on said hearing, a sheet metal holding device secured to the magnet and engaging the armature to removal. ly hold the same in place on the fulcrum provided by said edge, and suitable means secured at the other end of the casing and operated by said armature. Signed by nie at Chicago, Cook county, Illinois, this 16th day of August, 1906.

JOHN EnioKsoN.

Witnesses EDWARD D. FALEs, BERNARD D. VILLIs. 

